In 1978, I was 18 and was working as a nurse in a small town about 270 km away from Sydney, Australia. I was looking forward to having five fays off from duty. Unfortunately, the only one train a day back to my home in Sydney had already left. So I thought I'd hitch a ride (搭便车).

    I waited by the side of the highway for three hours but no one stopped for me. Finally, a man walked over and introduced himself as Gordon. He said that although he couldn't give me a lift, I should come back to his house for lunch. He noticed me standing for hours in the November heat and thought I must be hungry. I was doubtful as a young girl but he assured （使…放心）me I was safe, and he also offered to help me find a lift home afterwards. When we arrived at his house, he made us sandwiches. After lunch, he helped me find a lift home.

    Twenty-five years later, in 2003, while I was driving to a nearby town one day, I saw an elderly man standing in the glaring heat, trying to hitch a ride. I thought it was another chance to repay someone for the kindness I'd been given decades earlier. I pulled over and picked him up. I made him comfortable on the back seat and offered him some water.

    After a few moments of small talk, the man said to me, “You haven't changed a bit, even your red hair is still the same.” I couldn't remember where I'd met him. He then told me he was the man who had given me lunch and helped me find a lift all those years ago. It was Gordon.

    This day three foreign gentlemen came to a bus stop in England and waited. About five minutes later, the bus they wanted came along. They were just going to get on when suddenly there was a loud noise behind them. People rushed onto the bus and tried to push them out of the way. Someone shouted at them. The bus conductor came rushing down the stairs to see what the trouble was about. The three foreigners seemed all at sea and looked embarrassed. No one had told them about the British custom of lining up for a bus — the first person who arrives at the bus stop is the first person to get on the bus.

    Learning the language of a country isn't enough. If you want to have a pleasant visit, find out as much as possible about the manners and customs of your host country. You will probably be surprised just how different they can be from your own. A visitor to India would do well if he/she knows that people there consider it impolite to use the left hand for passing food at table. The left hand is supposed to be used for washing yourself. Also in India, you might see a man shaking his head to show that he doesn't agree. But in many parts of India a shake of the head means agreement. Nodding your head when you are given a drink in Bulgaria will probably leave you thirsty.

    At a meal in countries on the Arabic Peninsula, you will find that your glass is repeatedly refilled as soon as you drink up. If you think that you have had enough, you should take the cup or glass in your hand and give it a little shake from side to side or place your hand over the top.

    In Europe it is quite usual to cross your legs when you are sitting talking to someone even at an important meeting. Doing this in Thailand, however, could cause trouble. Also, you should try to avoid touching the head of an adult — it's just not done in Thailand.

    Bandhavgarh National Park in India is best known for its amazing setting, as well as having the highest concentration of tigers in India. In addition to tigers, there are also bears, deer, wolves, birds, etc.

    Location: In Madhya Pradesh state, almost 200 kilometers northeast of Jabalpur. The nearest village is Tala, which is the access point of the park.

    Opening Hours and Safari（打猎）Times

    Safaris operate twice a day, starting at dawn until late morning, and mid afternoon until sunset. The best time to visit the park is early in the morning or after 4 p.m. to spot the animals. the park is closed from July 1 to September 30 due to the monsoon season（季风季节）.

    Bandhavgarh Zone

    Bandhavgarh is divided into three main zones: Tala (the park's best zone, with the most tigers), Magdhi (the second best zone to see tigers), and Khitauli (scenic and less visited, although tiger sighting do occur there; particularly good for birding).

    Entry Fees and Charges for Jeep Safaris

    Bandhavgarh has become expensive to visit in recent years. Entry fees have increased since October 2014. When going on a safari, separate fees must be paid for park entry and jeep hire. Entry tickets are priced per vehicle (up to six people). For 2015-16, park entry tickets cost as follows:

    Tala Zone: 2,400 rupees for Indians, 4,800 rupees for foreigners. (Up to six people)

    Other Zones: 1,200 rupees for Indians, 2,400 rupees for foreigners. (Up to six people)

    Jeep Hire

    Expect to pay about 2,200 rupees to hire a jeep, in addition to the entry cost. This can be done at the park entrance. All hotels can arrange jeep hire and tours, but at a higher rate. It's much less trouble though. Besides, unlike many national parks in India, it's possible to take private vehicles into Bandhavgarh.

    You may find yourself wondering: do blind people dream? Dream sleep is generated deep within the brain. As it is a function of the brain, and not the eyes, blind people dream as much as a sighted person would. It is interesting that the timing of the blindness in life may in fact influence the content of the dreams, however.

    Research has evaluated the sensory experiences of blind people while dreaming for decades. These findings have been interpreted (解释) within the context of sighted people's experience of dreams. It is useful to consider the content of all dreams to better understand where it differs among the blind.

    Most dreams contain features that are both visual and kinesthetic (related to movement, such as falling). More than half of dreams contain a sound. It is rare for people to describe other sensory experiences, such as those related to smell, taste, and pain. It is estimated that these latter three elements occur in less than 1 percent of dream reports. Interestingly, women more often experience smell and taste in their dreams while men more often report sound and pain.

    Blind people are more likely to report feelings of touch, taste, and smell in their dreams compared to sighted people. This likely corresponds to their waking experience which relies more on these senses. They do not have dramatic differences in dream content, except that they seem to have less aggression in their dreams.

    Despite these subtle differences in dream content, can blind people see when they dream? Some blind people actually can see in dreams, but it depends on when they lost their vision. Individuals who are born blind or those who become blind at a young age (typically by the age of 4 or 5 years) do not have visual imagery in their dreams. On the other hand, those who become blind after 5 or 6 years of age are able to see in their dreams. Therefore, there seems to be a window in the development of the brain in which the capacity to have visual dreams is established.

    Things a Bright Girl Can Do by Sally Nicholls, UK.

    A hundred years ago, women had very few opportunities. Their role was to marry and raise children. Sally Nicholls, new novel is set in that time. Her main characters are three young London women. Evelyn is from a wealthy family, May is from a religious background, and Nell is a woman from a much poorer community. Though they are from, different backgrounds, they all become involved in the women's suffrage(选举权)movement during World War 1(1914-1918).

    Far From the Tree by Robin Benway, US

    The New York Times reviewer called the book a “brilliant exercise in empathy (感同身受) It's an unusual novel. It begins with a troubling event for the main character, Grace, a 16-year-old who loves chemistry and cross-country running. But when she finds that she has become pregnant, she chooses to give up her baby for adoption and has to deal with the pain that this causes her.

    The situation is __________for her because Grace was once an orphan(孤儿)herself. She feels that she cannot turn to her adoptive parents for comfort and advice. Instead, she turns to her blood siblings (兄弟姐妹). But Grace soon finds that they are as troubled as she is, and that they are also keeping things to themselves that hurt too much to speak about.

    Readers can expect to be moved by the characters and their situations, but also gain insight (理解)into modem family life in America.

    Turtles All the Way Down by John Green, US

    This novel has two principal teenage characters. Aza Holmes has a mental illness, which is a condition where a person does the same thing over and over, without being able to stop. Aza narrates (叙述)the novel, so we learn all about her from the inside out.

    The second main character is Daisy, Aza's friend. The two start an adventure to find a billionaire who has gone missing.

    “This is my first attempt to write directly about the kind of mental illness that has affected my life since childhood, so while the story is fictional (虚构的)，it is also quite personal, ” said Green in a statement.

    Scientists at the University of Oxford have developed new artificial intelligence(AI) software to recognize and follow up the faces of chimpanzees(黑猩猩)in the wild. The new software will allow researchers and wildlife conservationists to significantly cut back on time spent analyzing videos, according to the new paper published in Science Advances.

    For species(物种)like chimpanzees which have complex social lives and live for many years, getting photos of their behavior taken from short-term field research can only tell us so much," says Dan Schofield, researcher and DPhil student at Oxford University's Private Models Lab, School of Anthropology. "By taking advantage of the power of machine learning to unlock large video files, it makes it possible to measure behavior over the long term."

    The computer model was trained using over 10 million images(影像):from Kyoto University s Primate Research Institute(PRI) video files of wild chimpanzees in Guinea, West Africa. The new software is the first to continuously track and recognize individual a wide range of poses, performing with high accuracy in difficult conditions such as low lighting and poor image quality.

    "Access to this large video file has allowed us to use deep neural networks to train models to a degree that was previously not possible," says Arsha Nagrad, co-auther of the study and DPhil student at the Department of Engineer Science, University of Oxford." Additionally, our new software differs from previous primate face recognition software in that it can be applied to videos with limited manual intervention(人工干预), saving hours of time."

    The technology can be potentially used to monitor species for conservation Although the present application focuses on chimpanzees, the AI software provided will be applied to other species, and help drive the adoption of AI systems to solve(解决)a range of problems in the wildlife sciences.